Edgetech Model 3100P Sub-bottom Sonar System User Manual page 6

Equipment not manufactured by EdgeTech is supported only to the extent of the original
manufacturer's warranties. Note: 90 day warranty applies to third-party items.
HARDWARE VARIATIONS & COMPATIBLITY
The 3100P Portable Topside Processor contains both standard PC and proprietary hardware.
At times EdgeTech may change these standard components due to their availability or
performance improvements. Although manufacturers, their models, and styles may change
from unit to unit, replacement components will generally be interchangeable. EdgeTech will
make all effort to see that replacement boards are interchangeable and use the same software
drivers. At times though, there may be instances where direct replacements do not exist.
When this happens, EdgeTech will provide the necessary drivers with the replacement part.